[R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread Frank Harrell
I like to bootstrap regression models, saving the entire set of bootstrapped regression coefficients for later use so that I can get confidence limits for a whole set of contrasts derived from the coefficients. I'm finding that ordinary bootstrap percentile confidence limits can provide poor

Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread John Fox
-project.org Subject: [R] Bootstrap BCa confidence limits with your own resamples I like to bootstrap regression models, saving the entire set of bootstrapped regression coefficients for later use so that I can get confidence limits for a whole set of contrasts derived from the coefficients. I'm

Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread Frank Harrell
) -- snip -- I hope this helps, John -Original Message- From: r-help-bounces@ [mailto:r-help-bounces@r- project.org] On Behalf Of Frank Harrell Sent: Tuesday, March 12, 2013 11:27 AM To: r-help@ Subject: [R] Bootstrap BCa confidence limits with your own

Re: [R] Bootstrap BCa confidence limits with your own resamples

2013-03-12 Thread John Fox
Dear Frank, -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of Frank Harrell Sent: Tuesday, March 12, 2013 2:24 PM To: r-help@r-project.org Subject: Re: [R] Bootstrap BCa confidence limits with your own resamples That's very